It’s good to band together again (3,3)

I believe the answer is:

not bad

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'it's good' is the definition.
(similar in meaning)

'to band together again' is the wordplay.
'to band' anagrams to 'NOT BAD'.
However, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for not bad that I've seen before include "fine" , "could be OK" , "Acceptable" , "So-so" , "Quite good" .)

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